Opened 2 months ago

Last modified 2 months ago

#3463 new help

JULES Ancillaries files

Reported by: fo196883 Owned by: jules_support
Component: JULES Keywords: WFDEI
Cc: Platform: Other
UM Version:

Description

Hello Patrick,

I am trying to setup a JULES run over Europe. Could you please point me to a source of ancillaries -land mask, vegetation types etc ?

Cheers,
Fred

Hi Frederick:

Can you raise a ticket about this on the NCAS CMS helpdesk?

Can you use global ancillaries and then run JULES only for Europe?
Patrick

Hello Patrick,

Yes, I could use global ancillaries. In fact, I have been trying to get the ancillary files for ILAMB but I am not sure where they are stored.

Cheers,
Fred

Hi Fred:
If you don't want to raise an NCAS CMS helpdesk ticket for this, I can do it on your behalf.
But it would be better if you did it yourself.

For the global ancillaries, you can use the GL7 or WFDEI ancillaries.
ILAMB doesn't really have ancillaries. It has observation files.
Patrick

Hello Patrick,

Thanks for letting me know. I will raise the ticket on NCAS.

Cheers,
Fred

Change History (1)

comment:1 Changed 2 months ago by pmcguire

Hi Fred
I am not sure if you want to use the GL7 or WFDEI ancillaries.

It's great that you applied for access to the ncas_generic group workspace (GWS). Hopefully that access will be approved soon.

In the ncas_generic GWS, there are the WFDEI ancillaries (1979-2012, half-degree resolution, on a global regular grid). The tutorial https://research.reading.ac.uk/landsurfaceprocesses/software-examples/jules-fluxnet2015-jules-global/runningglobal/ shows how to use these gridded WFDEI ancillaries for a global or northern-hemisphere run. You can modify step number 12 of the tutorial to do it for a regional European or UK run. The suite u-as052 described in that tutorial uses the informally-named "GL6R" land configuration. If you haven't recently done the JULES FLUXNET tutorial (https://research.reading.ac.uk/landsurfaceprocesses/software-examples/tutorial-rose-cylc-jules-on-jasmin/) then you might try doing that tutorial first, since JASMIN was updated to SLURM in the fall of 2020.

You already should have access to the jules GWS. That has the GL7 ancillaries in it. The GL7 ancillaries are somewhat lower resolution and on an irregular grid (at N96 resolution). The JLMP tutorial https://code.metoffice.gov.uk/trac/jules/wiki/JointLandModellingProgramme_JASMIN_running explains how to use and run the GL7 suite with its ancillaries. You can also run the suite with spatial subsets, if you want.

Patrick

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